Year	Number of Firms
1992-01-01	15
1997-01-01	23
2002-01-01	30
2003-01-01	40
2004-01-01	38
2005-01-01	31
2006-01-01	31
2007-01-01	27
2008-01-01	30
2009-01-01	33
2010-01-01	33
2011-01-01	26
2012-01-01	31
2013-01-01	32
2014-01-01	34
2015-01-01	28
2016-01-01	30